A soft soil foundation pit dewatering device

Abstract

The application discloses a soft soil foundation pit dewatering device and belongs to the technical field of water conservancy construction. The device comprises a filter well pipe body, a vacuum pipe is installed on the filter well pipe body, the vacuum pipe is in communication with the filter well pipe body, a vacuum pump is installed on the vacuum pipe, a water storage sleeve pipe is fixedly connected to the end of the filter well pipe body away from the vacuum pump, a water pumping pipe is fixedly connected to the inner end surface of the water storage sleeve pipe, a water collecting pipe is installed on the end of the water pumping pipe away from the water storage sleeve pipe, the water collecting pipe is arranged on the filter well pipe body, a water pumping pump is installed on the water collecting pipe, a plurality of water suction holes are formed in the end of the water pumping pipe located in the water storage sleeve pipe, a flow stopping plate is hinged to the inner wall of the water suction hole, a plurality of filter screens for filtering sand are installed on the water pumping pipe, the filter screens are in one-to-one correspondence with the water suction holes, an adjusting disc is slidably arranged on the inner wall of the filter well pipe body, and an adjusting assembly for moving the adjusting disc is arranged on the filter well pipe body. The application has the effect of improving the pipe well dewatering efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water conservancy construction, in particular to a soft soil foundation pit dewatering device. BACKGROUND

[0002] Foundation pit dewatering refers to the work of dewatering when the underground water level is higher than the excavation bottom surface during the excavation of the foundation pit. In order to ensure that the foundation pit can be constructed under dry conditions, prevent the slope from being unstable, the foundation from being sandy, the bottom of the pit from being uplifted, the pipe from being heaved, and the bearing capacity of the foundation from being reduced, the underground water is dewatered.

[0003] At present, due to the conventional dewatering method, the underground water is difficult to be dewatered in the low-permeability foundation, so the vacuum tube well dewatering is usually used. The operator directly puts the air suction pipe and the water pump into the same tube well, so that a certain degree of vacuum degree can be obtained in the well pipe, the underground water of the soil body is caused to seep into the well pipe, and then the operator starts the water pump to discharge it from the foundation pit.

[0004] According to the above related technology, the inventors believe that when the operator uses the air suction pipe to suck air, the vacuum degree in the tube well is greatly lost, and it is more difficult to guarantee the vacuum degree of the well pipe during the excavation of the foundation pit, which leads to the reduction of the dewatering efficiency and is not conducive to the excavation construction of the foundation pit in a short time. SUMMARY

[0005] In order to improve the dewatering efficiency of the tube well, the present application provides a soft soil foundation pit dewatering device.

[0006] The soft soil foundation pit dewatering device provided by the present application adopts the following technical scheme:

[0007] A soft soil foundation pit dewatering device, comprising a filter well pipe body, a vacuum pipe is installed on the filter well pipe body, the vacuum pipe is in communication with the filter well pipe body, a vacuum pump for sucking air in the filter well pipe body is installed on the vacuum pipe, a water storage sleeve pipe is fixedly connected to the end of the filter well pipe body away from the vacuum pump, a water suction pipe is fixedly connected to the inner end surface of the water storage sleeve pipe, a water collecting pipe is installed on the end of the water suction pipe away from the water storage sleeve pipe, the water collecting pipe is provided on the filter well pipe body, a water suction pump is installed on the end of the water collecting pipe out of the filter well pipe body, a plurality of water suction holes are formed in the end of the water suction pipe in the water storage sleeve pipe, a flow stopping plate is hinged to the inner wall of the water suction hole, a plurality of filter screens for filtering sand are installed on the water suction pipe, the filter screens correspond to the water suction holes one by one, an adjusting disc is slidingly arranged on the inner wall of the filter well pipe body, and an adjusting assembly for moving the adjusting disc is arranged on the filter well pipe.

[0008] By adopting the technical scheme, the operator puts the filter well pipe body into the pipe well, then the operator uses the vacuum pump to extract the air in the filter well pipe body, at this time, the air pressure in the filter well pipe body is reduced, the flow stop plate is abutted against the water suction pipe under the action of the air pressure in the filter well pipe body, so as to close the water suction hole; the water in the water storage sleeve pipe increases, at this time, the operator starts the water pump, the flow stop plate is opened under the action of the water pump, so that the water in the water storage sleeve pipe is discharged through the water suction hole, the water suction hole is arranged in the water storage sleeve pipe, so that the water suction pipe and the filter well pipe body are separated by water, the air in the water suction pipe is prevented from entering the filter well pipe body by the flow stop plate, the vacuum degree in the filter well pipe body is ensured, then the operator moves the adjusting disc by adjusting the adjusting assembly, so as to fine tune the air pressure in the filter well pipe body, thereby the stability of the vacuum degree in the filter well pipe body is improved, and the precipitation efficiency of the filter well pipe body is improved.

[0009] Preferably, the adjusting assembly comprises an adjusting screw rod fixedly connected to the adjusting disc, and an adjusting sleeve pipe mounted on the adjusting screw rod, the adjusting screw rod and the adjusting sleeve pipe are in threaded cooperation, an installation cover is mounted on the end of the filter well pipe away from the water storage sleeve pipe, the adjusting sleeve pipe penetrates through the installation cover, and a knob is fixedly connected to the end of the adjusting sleeve pipe penetrating through the installation cover.

[0010] By adopting the technical scheme, the operator rotates the knob, the rotation of the knob drives the rotation of the adjusting sleeve pipe, the rotation of the adjusting sleeve pipe drives the movement of the adjusting screw rod, the movement of the adjusting screw rod drives the movement of the adjusting disc, the movement of the adjusting disc increases the volume inside the filter well pipe body, thereby the air pressure in the filter well pipe body is reduced, the vacuum degree in the filter well pipe body is improved, and the precipitation efficiency of the filter well pipe body is improved.

[0011] Preferably, a cleaning ring is sleeved on the water suction pipe, the inner wall of the cleaning ring can abut against the filter screen, a driving screw rod penetrates through the cleaning ring, the driving screw rod and the cleaning ring are in threaded cooperation, and a driving assembly for driving the driving screw rod to rotate back and forth is arranged on the water storage sleeve pipe.

[0012] By adopting the technical scheme, the operator drives the driving screw rod to rotate by using the driving assembly, the rotation of the driving screw rod drives the movement of the cleaning ring, the cleaning ring cleans the sand and soil attached to the filter screen, thereby the water suction efficiency of the water suction pipe is improved, and the operator is facilitated to use.

[0013] Preferably, the driving assembly comprises a driving motor mounted on the water storage sleeve pipe, a driving rod fixedly connected to the output shaft of the driving motor, and a driving bevel gear fixedly sleeved on the driving rod, a driven bevel gear is fixedly sleeved on the driving screw rod, the driving bevel gear and the driven bevel gear are in meshing engagement, and a fixing assembly for fixing the cleaning ring is arranged on the water suction pipe.

[0014] By adopting the technical scheme, the operator starts the driving motor, the driving motor drives the driving rod to rotate, the driving rod drives the driving bevel gear to rotate, the driving bevel gear drives the driven bevel gear to rotate, the driven bevel gear drives the driving screw to rotate, and the driving screw drives the cleaning ring to move, thereby conveniently cleaning the filter screen by the operator, and the operator fixes the cleaning ring by the fixing assembly after the filter screen is cleaned, so as to prevent the cleaning ring from hindering the water suction pipe from sucking water and improve the water suction efficiency of the water suction pipe.

[0015] Preferably, the fixing assembly comprises a fixing rod penetrating the water suction pipe, a gear cylinder rotatably installed on the water suction pipe, and a control rack penetrating the water suction pipe, the fixing rod is provided with a tooth pattern, the gear cylinder is engaged with the tooth pattern on the fixing rod, the cleaning ring is provided with a fixing hole for sliding cooperation with the fixing rod, and the water suction pipe is provided with a floating assembly for driving the control rack to move.

[0016] By adopting the technical scheme, the operator moves the control rack by the floating assembly, the control rack drives the gear cylinder to rotate, the gear cylinder drives the fixing rod to move, and the fixing rod moves away from the fixing hole, so as to release the fixing state of the cleaning ring and facilitate the operator to use.

[0017] Preferably, the floating assembly comprises a limiting plate fixedly connected to the control rack and a floating ring slidingly sleeved on the water suction pipe, the water suction pipe is provided with a limiting ring groove for sliding cooperation with the floating ring, the inner wall of the limiting ring groove is provided with a limiting sliding groove for sliding cooperation with the limiting plate, the end portion of the limiting plate penetrating the inner wall of the limiting ring groove can abut against the floating ring, and the floating ring is installed with a plurality of floating balls.

[0018] By adopting the technical scheme, the operator extracts water in the filter well pipe body by the water suction pump, when the filter screen is blocked by sand, the water level in the water storage sleeve pipe drives the floating balls to move upward, the floating balls drive the floating ring to move, the floating ring drives the limiting plate to move, and the limiting plate drives the control rack to move, so as to move the fixing rod away from the fixing hole, release the fixing state of the cleaning ring, and facilitate the operator to use.

[0019] Preferably, the fixing rod is fixedly connected with a fixing spring, the water suction pipe is provided with a fixing sliding groove for sliding cooperation with the fixing rod, the end portion of the fixing spring away from the fixing rod is fixedly connected with the inner end surface of the fixing sliding groove, and the end portion of the fixing rod close to the cleaning ring is provided with an inclined surface.

[0020] By adopting the technical scheme, the water level in the water storage sleeve rises to drive the floating ball to move, the floating ball drives the fixed rod to move away from the fixed hole through the floating ring, at this time, the fixed spring is in a compressed state, when the sand on the filter screen is cleaned, the water level in the water storage sleeve drops, the fixed rod is ejected under the action of the fixed spring, when the cleaning ring moves to the position of the fixed rod, the cleaning ring slides on the inclined surface of the fixed rod, the fixed rod enters the fixed sliding groove under the action of the inclined surface, at this time, the fixed rod slides on the inner wall of the cleaning ring, the fixed spring is in a compressed state, when the fixed rod moves to the position of the fixed hole, the fixed rod is inserted into the fixed hole under the action of the fixed spring, so that the cleaning ring is fixed, and the operator can conveniently use repeatedly.

[0021] Preferably, a locking plate is arranged on the water pumping pipe, a ratchet plate is arranged on the end face of the locking plate, a ratchet is arranged on the fixed rod, the ratchet plate is engaged with the ratchet on the fixed rod, a locking sliding groove is arranged on the locking plate for sliding cooperation with the ratchet plate, a locking spring is fixedly connected to the ratchet plate, and the end portion of the locking spring away from the ratchet plate is fixedly connected to the inner end face of the locking sliding groove.

[0022] By adopting the technical scheme, when the filter screen is blocked, the water level in the water storage sleeve rises, the fixed rod enters the fixed sliding groove under the action of the limiting plate, then the operator moves the locking plate by using the moving assembly, the locking plate drives the ratchet plate to move, at this time, the locking spring is in a compressed state, the ratchet plate is tightly abutted with the fixed rod under the action of the locking spring, so that the fixed rod is fixed, the cleaning ring is prevented from being fixed due to frequent water level fluctuations, and the stability of the cleaning ring is improved.

[0023] Preferably, the moving assembly comprises a first bevel gear arranged on the water pumping pipe and a second bevel gear arranged on the inner wall of the limiting ring groove, the first bevel gear is engaged with the second bevel gear, the first bevel gear is fixedly connected with the locking plate, and the end portion of the second bevel gear penetrating out of the inner wall of the limiting ring groove is provided with an inclined surface, and the second bevel gear can abut against the inner wall of the floating ring.

[0024] By adopting the technical scheme, when the filter screen is blocked, the water level in the water storage sleeve rises, the floating ring moves under the action of the floating ball, the inner wall of the floating ring slides on the inclined surface of the second bevel gear, the second bevel gear moves under the action of the inclined surface to drive the second bevel gear to move, the first bevel gear moves to drive the locking plate to move, the locking plate moves to drive the ratchet plate to abut against the fixed rod, the ratchet plate meshes with the fixed rod, the water level continues to rise to drive the floating ring to continue to move, the floating ring drives the limiting plate to move, the limiting plate drives the fixed rod to move, and the fixed rod is completely in the fixed sliding groove and is fixed under the action of the ratchet plate, so that the fixing state of the cleaning ring is released, and the operator is facilitated to use.

[0025] Preferably, a moving sliding groove is arranged on the water pumping pipe and used for sliding cooperation with the second bevel gear, and a moving spring is fixedly connected to the second bevel gear and fixedly connected to the inner end surface of the moving sliding groove away from the second bevel gear.

[0026] By adopting the technical scheme, the water level in the water storage sleeve rises to drive the floating ring to move, the floating ring moves to drive the second bevel gear to move, the second bevel gear enters the moving sliding groove under the action of the inclined surface, at this time, the moving spring is in a compressed state, when the water level in the water storage sleeve decreases, the floating ring moves away from the second bevel gear, the second bevel gear moves under the action of the moving spring, the second bevel gear moves to drive the locking plate to move away from the fixed rod, so that the ratchet plate moves away from the fixed rod, and the fixed rod resets to fix the cleaning ring, thereby facilitating the operator to use it circularly.

[0027] In summary, the present application has at least one of the following beneficial technical effects:

[0028] 1. The operator puts the filter well pipe body into the pipe well, then the operator uses the vacuum pump to extract the air in the filter well pipe body, at this time, the air pressure in the filter well pipe body decreases, the stop plate abuts against the water pumping pipe under the action of the air pressure in the filter well pipe, so as to close the water suction hole; the water in the water storage sleeve increases, at this time, the operator starts the water pumping pump, the stop plate is opened under the action of the water pumping pump, so that the water in the water storage sleeve is discharged through the water suction hole, the water suction hole is arranged in the water storage sleeve, so that the water pumping pipe and the filter well pipe body are separated by water, the air in the water pumping pipe is prevented from entering the filter well pipe body by the stop plate, the vacuum degree in the filter well pipe body is ensured, then the operator moves the adjusting disc through the adjusting assembly, so as to finely adjust the air pressure in the filter pipe well body, thereby improving the stability of the vacuum degree in the filter well pipe body, and further improving the precipitation efficiency of the filter well pipe body;

[0029] 2. The operator starts the driving motor, the driving motor drives the driving rod to rotate, the driving rod drives the driving bevel gear to rotate, the driving bevel gear drives the driven bevel gear to rotate, the driven bevel gear drives the driving screw to rotate, the driving screw drives the cleaning ring to move, so that the operator can clean the filter screen, and after the filter screen is cleaned, the operator fixes the cleaning ring by using the fixing assembly, so as to prevent the cleaning ring from hindering the water suction pipe to suck water, and improve the water suction efficiency of the water suction pipe;

[0030] 3. When the filter screen is blocked, the water level in the water storage sleeve pipe rises, the floating ring moves under the action of the floating ball, the inner wall of the floating ring slides on the inclined surface of the second inclined rack, the second inclined rack moves under the action of the inclined surface and drives the first inclined rack to move, the first inclined rack drives the locking plate to move, the locking plate drives the ratchet plate to abut against the fixed rod, the ratchet plate is engaged with the fixed rod, the water level continues to rise and drives the floating ring to continue to move, the floating ring drives the limiting plate to move, the limiting plate drives the fixed rod to move, the fixed rod is completely inserted into the fixed sliding groove and is fixed under the action of the ratchet plate, so that the fixing state of the cleaning ring is released, and the operator can use conveniently. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a structural schematic view of a soft soil foundation pit dewatering device according to an embodiment of the present application.

[0032] Figure 2 is a structural schematic view of a soft soil foundation pit dewatering device according to an embodiment of the present application.

[0033] Figure 3 is a structural schematic view of a soft soil foundation pit dewatering device according to an embodiment of the present application.

[0034] Figure 4 is a structural schematic view of a soft soil foundation pit dewatering device according to an embodiment of the present application.

[0035] Figure 5 is Figure 4 is an enlarged view of A in FIG. 4.

[0036] Figure 6 is Figure 4 is an enlarged view of B in FIG. 4.

[0037] BRIEF DESCRIPTION OF DRAWINGS

[0038] 1, filter well pipe body; 11, vacuum pipe; 12, vacuum pump; 13, water storage sleeve; 14, water pumping pipe; 141, water suction hole; 142, flow stop plate; 143, filter screen; 144, adjusting disc; 145, cleaning ring; 146, drive screw; 15, water collecting pipe; 16, water pumping pump; 17, filter hole; 2, adjusting assembly; 21, adjusting screw; 22, adjusting sleeve; 23, mounting cover; 24, knob; 3, drive assembly; 31, drive motor; 32, drive rod; 33, drive bevel gear; 34, driven bevel gear; 4, fixing assembly; 41, fixing rod; 42, gear cylinder; 43, control rack; 44, fixing hole; 45, fixing spring; 46, fixing sliding groove; 47, locking plate; 471, ratchet plate; 472, locking sliding groove; 473, locking spring; 5, floating assembly; 51, limiting plate; 52, floating ring; 53, limiting ring groove; 54, limiting sliding groove; 55, floating ball; 6, moving assembly; 61, first helical rack; 62, second helical rack; 63, moving sliding groove; 64, moving spring. DETAILED DESCRIPTION

[0039] The following description will be made in conjunction with the accompanying drawings. Figures 1-6 The application is further described in detail.

[0040] The embodiment of the application discloses a soft soil foundation pit dewatering device. Figure 1 The dewatering device comprises a filter well pipe body 1. The filter well pipe body 1 is vertically arranged, a plurality of filter holes 17 are arranged on the filter well pipe body 1, and a water storage sleeve 13 is arranged on the bottom of the filter well pipe body 1. The water storage sleeve 13 is in a circular cylindrical shape, the water storage sleeve 13 is vertically arranged, and the opening of the water storage sleeve 13 is fixedly connected with the filter well pipe body 1.

[0041] Refer to Figure 1 , Figure 2 A vacuum pipe 11 is mounted on the filter well pipe body 1, the vacuum pipe 11 is horizontally arranged, the vacuum pipe 11 is communicated with the filter well pipe body 1, and a vacuum pump 12 is mounted on the end of the vacuum pipe 11 away from the filter well pipe body 1. A mounting cover 23 is arranged on the filter well pipe body 1, the mounting cover 23 is horizontally arranged, the mounting cover 23 is arranged on the top of the filter well pipe body 1, and the mounting cover 23 is fixedly connected with the filter well pipe body 1. An adjusting disc 144 is arranged on the filter well pipe body 1, the adjusting disc 144 is horizontally arranged, and the outer side wall of the adjusting disc 144 is in sliding fit with the inner side wall of the filter well pipe body 1.

[0042] Refer to Figure 2The adjusting assembly 2 is arranged on the filter well pipe body 1 and used for moving the adjusting disc 144. The adjusting assembly 2 comprises an adjusting screw 21 and an adjusting sleeve 22. The adjusting screw 21 is vertically arranged and fixedly connected with the adjusting disc 144. The adjusting sleeve 22 is vertically arranged and arranged through the mounting cover 23. The adjusting sleeve 22 is rotationally connected with the mounting pipe. The knob 24 is arranged on the end of the mounting pipe. The adjusting screw 21 is arranged through the end of the adjusting sleeve 22 away from the knob 24. The adjusting screw 21 is threadedly connected with the adjusting sleeve 22.

[0043] The operator rotates the knob 24. The knob 24 drives the adjusting screw 21 to move through the adjusting sleeve 22. The adjusting screw 21 drives the adjusting disc 144 to move. The movement of the adjusting disc 144 increases the volume of the filter well pipe body 1. Thus, the air pressure in the filter well pipe body 1 is reduced. The vacuum degree in the filter well pipe body 1 is improved. The precipitation efficiency of the filter well pipe body 1 is improved.

[0044] Referring to Figure 1 , Figure 2 The water collecting pipe 15 is arranged on the filter well pipe. The water collecting pipe 15 is horizontally arranged and arranged through the filter well pipe body 1. The water collecting pipe 15 is fixedly connected with the filter well pipe body 1. The water collecting pipe 15 is arranged through the end of the filter well pipe. The water pump 16 is arranged on the end of the water collecting pipe 15. The water collecting pipe 14 is arranged on the water collecting pipe 15. The water collecting pipe 14 is vertically arranged. The water collecting pipe 14 is arranged on the end of the water collecting pipe 15 arranged into the filter well pipe. The water collecting pipe 14 is connected with the water collecting pipe 15. The end of the water collecting pipe 14 away from the water collecting pipe 15 is fixedly connected with the water storage sleeve pipe 13.

[0045] Referring to Figure 2 , Figure 3 The water suction hole 141 is arranged on the water collecting pipe 14. The water suction hole 141 is arranged on the end of the water collecting pipe 14 arranged in the water storage sleeve pipe 13. The water suction hole 141 is arranged in plurality. The water suction hole 141 is uniformly arranged around the outer circumferential surface of the water collecting pipe 14. The filter screen 143 is arranged on the water collecting pipe 14. The filter screen 143 is arranged in plurality. The filter screen 143 is in one-to-one correspondence with the water suction hole 141. The filter screen 143 is fixedly connected with the inner wall of the water suction hole 141. The flow stopping plate 142 is arranged on the inner wall of the water collecting pipe 14. The flow stopping plate 142 is vertically arranged. The flow stopping plate 142 is hingedly connected with the inner wall of the water collecting pipe 14. The flow stopping plate 142 is arranged in plurality. The flow stopping plate 142 is in one-to-one correspondence with the water suction hole 141.

[0046] The operator extracts air in the filter well pipe body 1 by using the vacuum pump 12, so that the air pressure in the filter well pipe body 1 is reduced, the flow stop plate 142 is tightly closed against the water collecting pipe 15 under the action of the air pressure in the suction pipe, thereby closing the water suction hole 141; the water in the water storage sleeve pipe 13 increases, at this time the operator starts the water pump 16, the flow stop plate 142 is opened under the action of the water pump 16, so that the water in the water storage sleeve pipe 13 is discharged through the water suction hole 141, the water suction hole 141 is arranged in the water storage sleeve pipe 13, so that the water suction pipe 14 is separated from the filter well pipe body 1 by water, the air in the water suction pipe 14 is prevented from entering the filter well pipe body 1 by the flow stop plate 142, the vacuum degree in the filter well pipe body 1 is ensured, and the precipitation efficiency of the filter well pipe body 1 is improved.

[0047] Referring to Figure 2 , Figure 4 , the water suction pipe 14 is provided with a cleaning ring 145, the cleaning ring 145 is horizontally arranged, the cleaning ring 145 is sleeved on the water suction pipe 14, and the inner side wall of the cleaning ring 145 can be in sliding cooperation with the outer surface of the filter screen 143. The driving screw rod 146 is arranged on the cleaning ring 145, the driving screw rod 146 is vertically arranged, the driving screw rod 146 is in threaded cooperation with the cleaning ring 145, and the end portion of the driving screw rod 146 away from the cleaning ring 145 penetrates into the water storage sleeve pipe 13.

[0048] Referring to Figure 4 , the water storage sleeve pipe 13 is provided with a driving assembly 3 for driving the driving screw rod 146 to rotate back and forth, the driving assembly 3 comprises a driving motor 31, a driving rod 32 and a driving bevel gear 33, the driving motor 31 is horizontally arranged and is installed on the water storage sleeve pipe 13. The driving rod 32 is horizontally arranged and penetrates into the water storage sleeve pipe 13, the driving rod 32 is rotationally connected with the water storage sleeve pipe 13, and the driving rod 32 is fixedly connected with the output shaft of the driving motor 31.

[0049] Referring to Figure 4 , the driving bevel gear 33 is vertically arranged, the driving bevel gear 33 is arranged on the driving rod 32 and is sleeved on the driving rod 32, and the driving bevel gear 33 is fixedly connected with the driving rod 32. The end portion of the driving screw rod 146 penetrating into the water storage sleeve pipe 13 is provided with a driven bevel gear 34, the driven bevel gear 34 is horizontally arranged, the driven bevel gear 34 is sleeved on the driving screw rod 146, the driven bevel gear 34 is fixedly connected with the driving screw rod 146, and the driven bevel gear 34 is in meshing connection with the driving bevel gear 33.

[0050] Referring to Figure 4 , Figure 5The fixed assembly 4 is arranged on the water suction pipe 14 and used for fixing the cleaning ring 145. The fixed assembly 4 comprises a fixed rod 41, a gear cylinder 42 and a control rack 43. The fixed rod 41 is horizontally arranged and penetrates the water suction pipe 14. The inner wall of the fixed rod 41 is in sliding fit with the inner wall of a fixed hole 44 arranged on the inner wall of the cleaning ring 145. The end of the fixed rod 41 penetrating the cleaning ring 145 is provided with an inclined surface. A fixed sliding groove 46 is arranged on the water suction pipe 14. The inner wall of the fixed sliding groove 46 is in sliding fit with the outer wall of the fixed rod 41. The inner end surface of the fixed sliding groove 46 is provided with a fixed spring 45.

[0051] With reference to Figure 5 The fixed spring 45 is horizontally arranged and arranged in the fixed sliding groove 46. One end of the fixed spring 45 is fixedly connected with the inner end surface of the fixed sliding groove 46. The other end of the fixed spring 45 is fixedly connected with the fixed rod 41. The gear cylinder 42 is horizontally arranged and penetrates the water suction pipe 14. The gear cylinder 42 is in rotational connection with the water suction pipe 14. The fixed rod 41 is provided with a toothed pattern. The gear cylinder 42 is in meshing fit with the toothed pattern of the fixed rod 41. The control rack 43 is vertically arranged and penetrates the water suction pipe 14. The control rack 43 is in meshing fit with the gear cylinder 42.

[0052] With reference to Figure 4 The water suction pipe 14 is provided with a floating assembly 5 used for driving the control rack 43 to move. The floating assembly 5 comprises a limiting plate 51 and a floating ring 52. The limiting plate 51 is horizontally arranged and penetrates the water suction pipe 14. The end of the limiting plate 51 penetrating the water suction pipe 14 is fixedly connected with the control rack 43. The floating ring 52 is horizontally arranged and arranged on the water suction pipe 14. The floating ring 52 is sleeved on the water suction pipe 14. A limiting ring groove 53 is arranged on the outer circumferential surface of the water suction pipe 14. The inner wall of the floating ring 52 is in sliding fit with the inner wall of the limiting ring groove 53. A limiting sliding groove 54 is arranged on the inner wall of the limiting ring groove 53. The limiting sliding groove 54 is vertically arranged. The inner wall of the limiting sliding groove 54 is in sliding fit with the outer wall of the limiting plate 51.

[0053] With reference to Figure 4The floating ring 52 is provided with a plurality of floating balls 55, which are evenly arranged around the outer circumferential surface of the floating ring 52. When the amount of sand on the filter screen 143 is excessive, the water level in the water storage sleeve 13 rises, which drives the floating balls 55 to rise. The floating balls 55 drive the limiting plate 51 to move through the floating ring 52. The limiting plate 51 drives the gear cylinder 42 to rotate through the control rack 43. The rotation of the gear cylinder 42 drives the fixed rod 41 to move away from the fixed hole 44. Then, the operator drives the driving rod 32 to rotate through the driving motor 31. The driving rod 32 drives the driven bevel gear 34 to rotate through the driving bevel gear 33. The driven bevel gear 34 drives the cleaning ring 145 to clean the sand attached to the filter screen 143 through the driving screw 146, thereby improving the water pumping efficiency of the water pumping pipe 14 and facilitating the use of the operator.

[0054] When the sand is cleaned, the water level in the water storage sleeve 13 decreases, thereby causing the floating balls 55 to drive the floating ring 52 to descend. The descent of the floating ring 52 causes the fixed rod 41 to pop out under the action of the fixed spring 45. When the cleaning ring 145 moves to the position of the fixed rod 41, the fixed rod 41 enters the fixed sliding groove 46 under the action of the inclined surface. The fixed rod 41 slides on the inner side wall of the cleaning ring 145. When the fixed rod 41 moves to the position of the fixed hole 44, the fixed rod 41 is inserted into the fixed hole 44 under the action of the fixed spring 45, thereby facilitating the cyclic use of the operator.

[0055] Referring to Figure 5 , the water pumping pipe 14 is provided with a locking plate 47. The locking plate 47 is in the shape of a rectangular plate and is horizontally arranged. The locking plate 47 is provided with a ratchet plate 471.

[0056] Referring to Figure 5 , the ratchet plate 471 is horizontally arranged and is provided on the locking plate 47. The locking plate 47 is provided with a locking sliding groove 472. The inner side wall of the locking sliding groove 472 and the outer side wall of the ratchet plate 471 are in sliding cooperation.

[0057] Referring to Figure 4 , Figure 6The pumping pipe 14 is provided with a moving assembly 6 for driving the locking plate 47 to move, and the moving assembly 6 comprises a first bevel gear rack 61 and a second bevel gear rack 62. The first bevel gear rack 61 is vertically arranged and is arranged through the pumping pipe 14, and the first bevel gear rack 61 is fixedly connected with the locking plate 47. The second bevel gear rack 62 is horizontally arranged and is arranged through the inner wall of the limiting ring groove 53, and the end of the second bevel gear rack 62 penetrating the pumping pipe 14 is engaged with the first bevel gear rack 61.

[0058] With reference to Figure 6 The end of the second bevel gear rack 62 penetrating the pumping pipe 14 is provided with a bevel surface, and the end of the second bevel gear rack 62 penetrating the pumping pipe 14 can abut against the inner wall of the floating ring 52. The inner wall of the limiting ring groove 53 is provided with a moving sliding groove 63, the inner side wall of the moving sliding groove 63 is in sliding cooperation with the outer side wall of the second bevel gear rack 62, and the second bevel gear rack 62 is provided with a moving spring 64. The moving spring 64 is horizontally arranged, one end of the moving spring 64 is fixedly connected with the second bevel gear rack 62, and the other end of the moving spring 64 is fixedly connected with the inner end surface of the moving sliding groove 63.

[0059] When the sand on the filter screen 143 is too much, the water level in the water storage sleeve pipe 13 rises, the water level drives the floating ball 55 to rise, the floating ball 55 moves through the floating ring 52, the floating ring 52 moves to drive the second bevel gear rack 62 to move under the action of the bevel surface, at this time, the moving spring 64 is in a compressed state, the second bevel gear rack 62 drives the locking plate 47 to move through the first bevel gear rack 61, the locking plate 47 moves to make the ratchet plate 471 abut against the fixed rod 41 under the action of the locking spring 473, the floating ring 52 continues to move to drive the limiting plate 51 to move, so that the fixed rod 41 enters the fixed sliding groove 46, at this time, the fixed spring 45 is in a compressed state, the fixed rod 41 is fixed by the ratchet plate 471, so as to prevent the water level from frequently fluctuating and mistakenly fixing the cleaning ring 145, and the stability of the cleaning ring 145 is improved.

[0060] After the sand on the filter screen 143 is cleaned, the water level in the water storage sleeve pipe 13 drops to drive the floating ball 55 to drop, the floating ball 55 drives the floating ring 52 to drop, when the floating ring 52 moves to a position below the second bevel gear rack 62, the second bevel gear rack 62 is ejected under the action of the moving spring 64, so as to drive the locking plate 47 to drive the ratchet plate 471 to move away from the fixed rod 41, the fixed rod 41 is ejected under the action of the fixed spring 45, so as to fix the cleaning ring 145, which is convenient for the operator to repeatedly use.

[0061] The implementation principle of the soft soil foundation pit dewatering device is as follows: an operator puts the filter well pipe body 1 into the pipe well, then the operator uses the vacuum pump 12 to extract the air in the filter well pipe body 1; the water in the water storage sleeve pipe 13 increases, at this time the operator starts the water pump 16, the water in the water storage sleeve pipe 13 is discharged through the water suction hole 141, the air in the water suction pipe 14 is prevented from entering the filter well pipe body 1 through the flow stop plate 142, the vacuum degree in the filter well pipe body 1 is ensured, then the operator moves the adjusting disc 144 by rotating the knob 24, thereby the air pressure in the filter well pipe body is finely adjusted, thereby the stability of the vacuum degree in the filter well pipe body 1 is improved, and the dewatering efficiency of the filter well pipe body 1 is improved.

[0062] When the filter screen 143 is blocked by sand, the floating ball 55 drives the floating ring 52 to rise, thereby the fixing of the cleaning ring 145 is released, the sand attached to the filter screen 143 is conveniently cleaned by the operator, thereby the water suction efficiency of the water suction pipe 14 is improved; the floating ring 52 fixes the fixed rod 41 through the ratchet plate 471, the fixing of the cleaning ring 145 is prevented due to frequent water level fluctuation, and the stability of the cleaning ring 145 is improved.

[0063] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, therefore: equivalent changes made on the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A dewatering device for foundation pits in soft soil, comprising a filter well pipe body (1), characterized in that: A vacuum tube (11) is installed on the filter well pipe body (1), and the vacuum tube (11) is connected to the filter well pipe body (1). A vacuum pump (12) for sucking air from the filter well pipe body (1) is installed on the vacuum tube (11). A water storage sleeve (13) is fixedly connected to the end of the filter well pipe body (1) away from the vacuum pump (12). A water pumping pipe (14) is fixedly connected to the inner end face of the water storage sleeve (13). A water collecting pipe (15) is installed on the end of the water pumping pipe (14) away from the water storage sleeve (13). The water collecting pipe (15) passes through the filter well pipe body (1). (15) A water pump (16) is installed on the end of the filter well pipe body (1). The end of the water pumping pipe (14) located inside the water storage sleeve (13) is provided with multiple water suction holes (141). A flow stop plate (142) is hinged on the inner wall of the water suction hole (141). Multiple filter screens (143) for filtering sand are installed on the water pumping pipe (14). The filter screens (143) correspond one-to-one with the water suction holes (141). An adjusting disc (144) is slidably provided on the inner wall of the filter well pipe body (1). An adjusting component (2) for moving the adjusting disc (144) is provided on the filter well pipe body (1). A cleaning ring (145) is fitted on the water pumping pipe (14). The inner wall of the cleaning ring (145) can abut against the filter screen (143). A drive screw (146) is threaded through the cleaning ring (145). The drive screw (146) is threaded into the cleaning ring (145). A drive assembly (3) for driving the drive screw (146) to reciprocate is provided on the water storage sleeve (13). The adjustment assembly (2) includes an adjustment screw (21) and an adjustment sleeve (22). The adjustment screw (21) is fixedly connected to the adjustment disc (144). The adjustment sleeve (22) is installed on the adjustment screw (21). The adjustment screw (21) and the adjustment sleeve (22) are threaded together. An installation cover (23) is installed on the end of the filter well pipe away from the water storage sleeve (13). The adjustment sleeve (22) passes through the installation cover (23). A knob (24) is fixedly connected to the end of the adjustment sleeve (22) that passes through the installation cover (23).

2. The soft soil foundation pit dewatering device according to claim 1, characterized in that: The drive assembly (3) includes a drive motor (31) mounted on the water storage sleeve (13), a drive rod (32) fixedly connected to the output shaft of the drive motor (31), a drive bevel gear (33) fixedly sleeved on the drive rod (32), a driven bevel gear (34) fixedly sleeved on the drive screw (146), the drive bevel gear (33) meshing with the driven bevel gear (34), and a fixing assembly (4) for fixing the cleaning ring (145) is provided on the water pumping pipe (14).

3. The soft soil foundation pit dewatering device according to claim 2, characterized in that: The fixing component (4) includes a fixing rod (41) passing through the water pumping pipe (14), a gear cylinder (42) rotatably mounted on the water pumping pipe (14), and a control rack (43) passing through the water pumping pipe (14). The fixing rod (41) is provided with teeth, and the gear cylinder (42) meshes with the teeth on the fixing rod (41). The cleaning ring (145) is provided with a fixing hole (44) for sliding cooperation with the fixing rod (41), and the water pumping pipe (14) is provided with a floating component (5) for driving the control rack (43) to move.

4. The soft soil foundation pit dewatering device according to claim 3, characterized in that: The floating assembly (5) includes a limiting plate (51) fixedly connected to the control rack (43) and a floating ring (52) slidably sleeved on the pumping pipe (14). The pumping pipe (14) has a limiting ring groove (53) for sliding cooperation with the floating ring (52). The inner wall of the limiting ring groove (53) has a limiting groove (54) for sliding cooperation with the limiting plate (51). The end of the limiting plate (51) that protrudes from the inner wall of the limiting ring groove (53) can abut against the floating ring (52). The floating ring (52) is equipped with a plurality of floats (55).

5. A dewatering device for foundation pits on soft soil foundations according to claim 3, characterized in that: A fixing spring (45) is fixedly connected to the fixing rod (41), and a fixing groove (46) is provided on the water pump pipe (14) for sliding cooperation with the fixing rod (41). The end of the fixing spring (45) away from the fixing rod (41) is fixedly connected to the inner end face of the fixing groove (46). An inclined surface is provided on the end of the fixing rod (41) near the cleaning ring (145).

6. A dewatering device for foundation pits on soft soil foundations according to claim 4, characterized in that: A locking plate (47) is provided on the pumping pipe (14). A ratchet plate (471) is provided on the end face of the locking plate (47) near the fixing rod (41). The fixing rod (41) is provided with ratchet teeth. The ratchet plate (471) engages with the teeth on the fixing rod (41). A locking groove (472) is provided on the locking plate (47) for sliding cooperation with the ratchet plate (471). A locking spring (473) is fixedly connected to the ratchet plate (471). The end of the locking spring (473) away from the ratchet plate (471) is fixedly connected to the inner end face of the locking groove (472). A moving component (6) for driving the locking plate (47) to move is provided on the pumping pipe (14).

7. A dewatering device for foundation pits on soft soil foundations according to claim 6, characterized in that: The moving component (6) includes a first oblique rack (61) passing through the water pumping pipe (14) and a second oblique rack (62) passing through the inner wall of the limiting ring groove (53). The first oblique rack (61) meshes with the second oblique rack (62). The first oblique rack (61) is fixedly connected to the locking plate (47). The end of the second oblique rack (62) that passes through the inner wall of the limiting ring groove (53) is provided with an oblique surface. The second oblique rack (62) can abut against the inner wall of the floating ring (52).

8. A dewatering device for foundation pits on soft soil foundations according to claim 7, characterized in that: The water pumping pipe (14) is provided with a sliding groove (63) for sliding cooperation with the second helical rack (62). A movable spring (64) is fixedly connected to the second helical rack (62), and the end of the movable spring (64) away from the second helical rack (62) is fixedly connected to the inner end face of the sliding groove (63).

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